{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-125259 in the wild and no public exploit code.","exposure":"","fix":"No fix has been published for CVE-2026-125259 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-125259 is a high-severity vulnerability in FFmpeg, published on 9 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-125259 and fix it if it is affected.\n\nWhat it is: CVE-2026-125259 is a high-severity vulnerability in FFmpeg, published on 9 Nov 2026. \nExploitation: There is no known exploitation of CVE-2026-125259 in the wild and no public exploit code.\n\nAffected product: FFmpeg. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-125259/ (Markdown: https://insights.sbomify.com/CVE-2026-125259/index.md)","id":"CVE-2026-125259","markdown":"https://insights.sbomify.com/CVE-2026-125259/index.md","name":"CVE-2026-125259","record":{"aliases":["GHSA-pr5x-4ggj-w5wj","UBUNTU-CVE-2026-125259"],"analysis":null,"analysis_generated_by":null,"assigner":"VulnCheck","cpe":[],"cvss":{"score":8.5,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-190","name":"Integer Overflow or Wraparound"}],"description":"FFmpeg through 9.0.2 contains an integer overflow vulnerability in ff_prores_kostya_encode_init() that miscalculates frame_size_upper_bound using 32-bit arithmetic for large frame dimensions. Attackers can supply a high-resolution video transcoded with the prores_ks encoder, causing encode_frame() to write slices past an undersized packet buffer and corrupt heap memory.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"FFmpeg through 9.0.2 Heap Buffer Overflow via ProRes prores_ks Encoder","id":"CVE-2026-125259","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"FFmpeg through 9.0.2 Heap Buffer Overflow in EXR Encoder RLE Path","id":"CVE-2026-125260"},"nickname":null,"packages":[],"prev":{"headline":"FFmpeg through 9.0.2 Division by Zero via dovi_configure_ext() in dovi_rpuenc.c","id":"CVE-2026-125258"},"products":["FFmpeg"],"published":"2026-11-09","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-11-10","vendors":["FFmpeg"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-125259/"}